From d7abc3010463ad21a9c162430485ebbb29d378b1 Mon Sep 17 00:00:00 2001
From: Michael Kret <88898367+michael-radency@users.noreply.github.com>
Date: Thu, 11 Apr 2024 12:23:44 +0300
Subject: [PATCH] feat(Summarize Node): Option to continue when field to
 summarize can't be found in any items (#9118)

---
 .../Transform/Summarize/Summarize.node.ts     | 21 ++++++++++++++++++-
 .../nodes/Transform/Summarize/utils.ts        |  1 +
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/packages/nodes-base/nodes/Transform/Summarize/Summarize.node.ts b/packages/nodes-base/nodes/Transform/Summarize/Summarize.node.ts
index 1eadc629bb757..60e2a4599d5a8 100644
--- a/packages/nodes-base/nodes/Transform/Summarize/Summarize.node.ts
+++ b/packages/nodes-base/nodes/Transform/Summarize/Summarize.node.ts
@@ -14,6 +14,7 @@ import {
 	fieldValueGetter,
 	splitData,
 } from './utils';
+import { generatePairedItemData } from '../../../utils/utilities';
 
 export class Summarize implements INodeType {
 	description: INodeTypeDescription = {
@@ -239,6 +240,14 @@ export class Summarize implements INodeType {
 				placeholder: 'Add Option',
 				default: {},
 				options: [
+					{
+						displayName: 'Continue if Field Not Found',
+						name: 'continueIfFieldNotFound',
+						type: 'boolean',
+						default: false,
+						description:
+							"Whether to continue if field to summarize can't be found in any items and return single empty item, owerwise an error would be thrown",
+					},
 					{
 						displayName: 'Disable Dot Notation',
 						name: 'disableDotNotation',
@@ -304,7 +313,17 @@ export class Summarize implements INodeType {
 		const nodeVersion = this.getNode().typeVersion;
 
 		if (nodeVersion < 2.1) {
-			checkIfFieldExists.call(this, newItems, fieldsToSummarize, getValue);
+			try {
+				checkIfFieldExists.call(this, newItems, fieldsToSummarize, getValue);
+			} catch (error) {
+				if (options.continueIfFieldNotFound) {
+					const itemData = generatePairedItemData(items.length);
+
+					return [[{ json: {}, pairedItem: itemData }]];
+				} else {
+					throw error;
+				}
+			}
 		}
 
 		const aggregationResult = splitData(
diff --git a/packages/nodes-base/nodes/Transform/Summarize/utils.ts b/packages/nodes-base/nodes/Transform/Summarize/utils.ts
index 89fdb166008c0..0094d4d8efc9a 100644
--- a/packages/nodes-base/nodes/Transform/Summarize/utils.ts
+++ b/packages/nodes-base/nodes/Transform/Summarize/utils.ts
@@ -40,6 +40,7 @@ const AggregationDisplayNames = {
 export const NUMERICAL_AGGREGATIONS = ['average', 'sum'];
 
 export type SummarizeOptions = {
+	continueIfFieldNotFound: boolean;
 	disableDotNotation?: boolean;
 	outputFormat?: 'separateItems' | 'singleItem';
 	skipEmptySplitFields?: boolean;